Tony,

I have not changed the fuel filter yet.  It is post pump.  Pump sound pretty
normal.  No idea what's in the tank or how old it is.

I don't think it is a filter obstruction, when I've had that issue, the
engine will cut out and start coughing at the upper RPMs when the most fuel
is needed.

I do have a filter waiting under the rear seat, since I intended to change
it after I had bought Blaze over a year ago.

Thanks for your input.

-Dick Wong-
78 Scirocco
Original Owner
87 Vanagon Syncro 2.5 (Blaze)
Third Owner
12 Golf TDI
Original Co-Owner

-----Original Message-----
From: TCollins [mailto:tonycollin@gmail.com]
Sent: Thursday, September 11, 2014 6:50 AM
To: Dick Wong
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Engine miss

Dick,

Have you changed your fuel filter recently? Is it post pump? Any cavitation
sounds or whining from the pump? Is the tank newer, free of crud?
When I have these issues I check for gunk slushing in the tank and creating
an obstruction. These first happened to me a highway speeds. Much like you
described. It was simpler as I have the square pre pump filter still. Every
so often I have to blow bubbles into the tanks outlet hose to clear
obstructions inside at the screen of the tank.

Hth
Tony

> On Sep 11, 2014, at 12:53 AM, Dick Wong <sailingfc@DSLEXTREME.COM> wrote:
>
> Well here goes.  Don't know if any of you have this engine
> configuration, but since it's a Vanagon, I'm asking here first.
>
> Now that Blaze is back on the road, I get a miss/hiccup when moving
> with no load on the engine.  I've only noticed this in fourth gear and
> have not tried it in any other gear yet.
>
> Typical situation: In fourth gear, level ground, steady speed.  While
> in this mode, the engine will suddenly lose power for several seconds,
> then recover.  It's not a sputter, it's a sudden loss. No dash lights
> illuminate, tach is steady, no CEL. All this happens in the 1800 to
> 2800 rpm range (approximately).  I've never experienced this before.
> When accelerating or decelerating through this rpm range, it never
> happens, only when at a steady speed.  At freeway speeds, 3500 - 4500 rpm,
I don't see this issue.
>
> Digifant (023906023), 2.5L, 5 cylinder, new Bosch plug wires, new
> Bosch dist. cap, new Bosch rotor.
>
> Since this is basically a Eurovan setup, that's my next stop.
>
> Any ideas?
>
> Thanks.
>
> -Dick Wong-
> 78 Scirocco
> Original Owner
> 87 Vanagon Syncro 2.5 (Blaze)
> Third Owner
> 12 Golf TDI
> Original Co-Owner
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4765 / Virus Database: 4015/8182 - Release Date: 09/09/14